RRB Government Jobs Exams

A rectangular picture measuring 10 cm by 15 cm is surrounded by a frame
with uniform width x. Write a quadratic function that gives the area A of the
frame as a function of x.

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RRB Other Question

Find the equation of a quadratic function f whose graph has a vertical axis of
symmetry x = -2, the range of f is given by the interval [4 , +infinity) and f(2) = 8. Function g is given by g(x) = 2(x - 3)(x- 7). Find the value of x that makes g(x)
maximum